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<a href="#pub-attribs">Data Fields</a>  </div>
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<div class="title">cy_stc_dmac_descriptor_config_t Struct Reference<div class="ingroups"><a class="el" href="group__group__dmac.html">DMAC         (Direct Memory Access Controller)</a> &raquo; <a class="el" href="group__group__dmac__data__structures.html">Data Structures</a></div></div>  </div>
</div><!--header-->
<div class="contents">
<a name="details" id="details"></a><h2 class="groupheader">Description</h2>
<div class="textblock"><p>This structure is a configuration structure pre-initialized by user and passed as a parameter to the <a class="el" href="group__group__dmac__descriptor__functions.html#gad4204ef079b02d9afdd9328f0cd461f9">Cy_DMAC_Descriptor_Init()</a>. </p>
<p>It can be allocated in RAM/flash (on user's choice). In case of flash allocation there is a possibility to reinitialize the descriptor in runtime. This structure has all the parameters of the descriptor as separate parameters. Most of these parameters are represented in the <a class="el" href="structcy__stc__dmac__descriptor__t.html">cy_stc_dmac_descriptor_t</a> structure as bit fields. </p>
</div><table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-attribs"></a>
Data Fields</h2></td></tr>
<tr class="memitem:ab968eec67221ce9448bc3d7a51012232"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__group__dmac__enums.html#ga016be77931e116644c70e934101dd7c3">cy_en_dmac_retrigger_t</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structcy__stc__dmac__descriptor__config__t.html#ab968eec67221ce9448bc3d7a51012232">retrigger</a></td></tr>
<tr class="memdesc:ab968eec67221ce9448bc3d7a51012232"><td class="mdescLeft">&#160;</td><td class="mdescRight">Specifies whether the DMA controller should wait for the input trigger to be deactivated.  <a href="#ab968eec67221ce9448bc3d7a51012232">More...</a><br /></td></tr>
<tr class="separator:ab968eec67221ce9448bc3d7a51012232"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a264ab4339fd7533256baea6b49811f68"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__group__dmac__enums.html#ga78bb44cea66b230aadd012c5bae864a3">cy_en_dmac_trigger_type_t</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structcy__stc__dmac__descriptor__config__t.html#a264ab4339fd7533256baea6b49811f68">interruptType</a></td></tr>
<tr class="memdesc:a264ab4339fd7533256baea6b49811f68"><td class="mdescLeft">&#160;</td><td class="mdescRight">Sets the event that triggers an interrupt.  <a href="#a264ab4339fd7533256baea6b49811f68">More...</a><br /></td></tr>
<tr class="separator:a264ab4339fd7533256baea6b49811f68"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ac0eef282a96d373f44a5fa6078af259e"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__group__dmac__enums.html#ga78bb44cea66b230aadd012c5bae864a3">cy_en_dmac_trigger_type_t</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structcy__stc__dmac__descriptor__config__t.html#ac0eef282a96d373f44a5fa6078af259e">triggerOutType</a></td></tr>
<tr class="memdesc:ac0eef282a96d373f44a5fa6078af259e"><td class="mdescLeft">&#160;</td><td class="mdescRight">Sets the event that triggers an output.  <a href="#ac0eef282a96d373f44a5fa6078af259e">More...</a><br /></td></tr>
<tr class="separator:ac0eef282a96d373f44a5fa6078af259e"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a7ffaa831fab50f91b1ff7c5e5c1e0ae9"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__group__dmac__enums.html#ga0e57c8ab013d71005b81e60c2c4ee7a9">cy_en_dmac_channel_state_t</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structcy__stc__dmac__descriptor__config__t.html#a7ffaa831fab50f91b1ff7c5e5c1e0ae9">channelState</a></td></tr>
<tr class="memdesc:a7ffaa831fab50f91b1ff7c5e5c1e0ae9"><td class="mdescLeft">&#160;</td><td class="mdescRight">Specifies whether the channel is enabled or disabled on completion of descriptor see <a class="el" href="group__group__dmac__enums.html#ga0e57c8ab013d71005b81e60c2c4ee7a9">cy_en_dmac_channel_state_t</a>.  <a href="#a7ffaa831fab50f91b1ff7c5e5c1e0ae9">More...</a><br /></td></tr>
<tr class="separator:a7ffaa831fab50f91b1ff7c5e5c1e0ae9"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:aa20430ff90603af62ca4bd7c36de35e0"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__group__dmac__enums.html#ga78bb44cea66b230aadd012c5bae864a3">cy_en_dmac_trigger_type_t</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structcy__stc__dmac__descriptor__config__t.html#aa20430ff90603af62ca4bd7c36de35e0">triggerInType</a></td></tr>
<tr class="memdesc:aa20430ff90603af62ca4bd7c36de35e0"><td class="mdescLeft">&#160;</td><td class="mdescRight">Sets what type of transfer is triggered.  <a href="#aa20430ff90603af62ca4bd7c36de35e0">More...</a><br /></td></tr>
<tr class="separator:aa20430ff90603af62ca4bd7c36de35e0"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a642fe60a0744a3721c1b20005a8a9870"><td class="memItemLeft" align="right" valign="top"><a id="a642fe60a0744a3721c1b20005a8a9870"></a>
bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structcy__stc__dmac__descriptor__config__t.html#a642fe60a0744a3721c1b20005a8a9870">dataPrefetch</a></td></tr>
<tr class="memdesc:a642fe60a0744a3721c1b20005a8a9870"><td class="mdescLeft">&#160;</td><td class="mdescRight">Source data transfers are initiated as soon as the channel is enabled, the current descriptor pointer is NOT "0" and there is space available in the channel's data FIFO. <br /></td></tr>
<tr class="separator:a642fe60a0744a3721c1b20005a8a9870"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a7f23f95c4fc072b1aafbde341dd9a683"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__group__dmac__enums.html#gac2fda05300faa05ecfc118f22ed2a3c5">cy_en_dmac_data_size_t</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structcy__stc__dmac__descriptor__config__t.html#a7f23f95c4fc072b1aafbde341dd9a683">dataSize</a></td></tr>
<tr class="memdesc:a7f23f95c4fc072b1aafbde341dd9a683"><td class="mdescLeft">&#160;</td><td class="mdescRight">The size of the data bus for transfer.  <a href="#a7f23f95c4fc072b1aafbde341dd9a683">More...</a><br /></td></tr>
<tr class="separator:a7f23f95c4fc072b1aafbde341dd9a683"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:af95d0b9ee761cee84ab931dd87f89911"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__group__dmac__enums.html#ga678295e9e6a31ad41feab278d0faf4d1">cy_en_dmac_transfer_size_t</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structcy__stc__dmac__descriptor__config__t.html#af95d0b9ee761cee84ab931dd87f89911">srcTransferSize</a></td></tr>
<tr class="memdesc:af95d0b9ee761cee84ab931dd87f89911"><td class="mdescLeft">&#160;</td><td class="mdescRight">The source transfer size.  <a href="#af95d0b9ee761cee84ab931dd87f89911">More...</a><br /></td></tr>
<tr class="separator:af95d0b9ee761cee84ab931dd87f89911"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:aba58d5dad537ee08cfbf5f3df32aad5a"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__group__dmac__enums.html#ga678295e9e6a31ad41feab278d0faf4d1">cy_en_dmac_transfer_size_t</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structcy__stc__dmac__descriptor__config__t.html#aba58d5dad537ee08cfbf5f3df32aad5a">dstTransferSize</a></td></tr>
<tr class="memdesc:aba58d5dad537ee08cfbf5f3df32aad5a"><td class="mdescLeft">&#160;</td><td class="mdescRight">The destination transfer size.  <a href="#aba58d5dad537ee08cfbf5f3df32aad5a">More...</a><br /></td></tr>
<tr class="separator:aba58d5dad537ee08cfbf5f3df32aad5a"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a33ef66614f4911171513a63198e21c40"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__group__dmac__enums.html#gafc067b535081b9cd83fa29b9e68b002c">cy_en_dmac_descriptor_type_t</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structcy__stc__dmac__descriptor__config__t.html#a33ef66614f4911171513a63198e21c40">descriptorType</a></td></tr>
<tr class="memdesc:a33ef66614f4911171513a63198e21c40"><td class="mdescLeft">&#160;</td><td class="mdescRight">The type of the descriptor.  <a href="#a33ef66614f4911171513a63198e21c40">More...</a><br /></td></tr>
<tr class="separator:a33ef66614f4911171513a63198e21c40"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a56e737e12986f1f9ae07bbb23a547ba7"><td class="memItemLeft" align="right" valign="top">void *&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structcy__stc__dmac__descriptor__config__t.html#a56e737e12986f1f9ae07bbb23a547ba7">srcAddress</a></td></tr>
<tr class="memdesc:a56e737e12986f1f9ae07bbb23a547ba7"><td class="mdescLeft">&#160;</td><td class="mdescRight">The source address of the transfer.  <a href="#a56e737e12986f1f9ae07bbb23a547ba7">More...</a><br /></td></tr>
<tr class="separator:a56e737e12986f1f9ae07bbb23a547ba7"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ab9807708f96de4c232798b9862726f81"><td class="memItemLeft" align="right" valign="top">void *&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structcy__stc__dmac__descriptor__config__t.html#ab9807708f96de4c232798b9862726f81">dstAddress</a></td></tr>
<tr class="memdesc:ab9807708f96de4c232798b9862726f81"><td class="mdescLeft">&#160;</td><td class="mdescRight">The destination address of the transfer.  <a href="#ab9807708f96de4c232798b9862726f81">More...</a><br /></td></tr>
<tr class="separator:ab9807708f96de4c232798b9862726f81"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:aff401931a78359d9c4fbc668e2191732"><td class="memItemLeft" align="right" valign="top">int32_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structcy__stc__dmac__descriptor__config__t.html#aff401931a78359d9c4fbc668e2191732">srcXincrement</a></td></tr>
<tr class="memdesc:aff401931a78359d9c4fbc668e2191732"><td class="mdescLeft">&#160;</td><td class="mdescRight">The address increment of the source after each X-loop transfer.  <a href="#aff401931a78359d9c4fbc668e2191732">More...</a><br /></td></tr>
<tr class="separator:aff401931a78359d9c4fbc668e2191732"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a727d7f16fc29fa9d75c8125ea8377cdf"><td class="memItemLeft" align="right" valign="top">int32_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structcy__stc__dmac__descriptor__config__t.html#a727d7f16fc29fa9d75c8125ea8377cdf">dstXincrement</a></td></tr>
<tr class="memdesc:a727d7f16fc29fa9d75c8125ea8377cdf"><td class="mdescLeft">&#160;</td><td class="mdescRight">The address increment of the destination after each X-loop transfer.  <a href="#a727d7f16fc29fa9d75c8125ea8377cdf">More...</a><br /></td></tr>
<tr class="separator:a727d7f16fc29fa9d75c8125ea8377cdf"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a0d2682fd8330b970ffa7221ad8b02fa9"><td class="memItemLeft" align="right" valign="top">uint32_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structcy__stc__dmac__descriptor__config__t.html#a0d2682fd8330b970ffa7221ad8b02fa9">xCount</a></td></tr>
<tr class="memdesc:a0d2682fd8330b970ffa7221ad8b02fa9"><td class="mdescLeft">&#160;</td><td class="mdescRight">The number of transfers in an X-loop.  <a href="#a0d2682fd8330b970ffa7221ad8b02fa9">More...</a><br /></td></tr>
<tr class="separator:a0d2682fd8330b970ffa7221ad8b02fa9"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:afc4c4480f2290dc42b3d9c00be65cf9b"><td class="memItemLeft" align="right" valign="top">int32_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structcy__stc__dmac__descriptor__config__t.html#afc4c4480f2290dc42b3d9c00be65cf9b">srcYincrement</a></td></tr>
<tr class="memdesc:afc4c4480f2290dc42b3d9c00be65cf9b"><td class="mdescLeft">&#160;</td><td class="mdescRight">The address increment of the source after each Y-loop transfer.  <a href="#afc4c4480f2290dc42b3d9c00be65cf9b">More...</a><br /></td></tr>
<tr class="separator:afc4c4480f2290dc42b3d9c00be65cf9b"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a0d7425723f735c43d9f9c3d5add46051"><td class="memItemLeft" align="right" valign="top">int32_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structcy__stc__dmac__descriptor__config__t.html#a0d7425723f735c43d9f9c3d5add46051">dstYincrement</a></td></tr>
<tr class="memdesc:a0d7425723f735c43d9f9c3d5add46051"><td class="mdescLeft">&#160;</td><td class="mdescRight">The address increment of the destination after each Y-loop transfer.  <a href="#a0d7425723f735c43d9f9c3d5add46051">More...</a><br /></td></tr>
<tr class="separator:a0d7425723f735c43d9f9c3d5add46051"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ae98ef1c0c9f829c694ad24a5b8b43b20"><td class="memItemLeft" align="right" valign="top">uint32_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structcy__stc__dmac__descriptor__config__t.html#ae98ef1c0c9f829c694ad24a5b8b43b20">yCount</a></td></tr>
<tr class="memdesc:ae98ef1c0c9f829c694ad24a5b8b43b20"><td class="mdescLeft">&#160;</td><td class="mdescRight">The number of X-loops in the Y-loop.  <a href="#ae98ef1c0c9f829c694ad24a5b8b43b20">More...</a><br /></td></tr>
<tr class="separator:ae98ef1c0c9f829c694ad24a5b8b43b20"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a99cb4784bc632bd6f7144a972e7b9509"><td class="memItemLeft" align="right" valign="top"><a class="el" href="structcy__stc__dmac__descriptor__t.html">cy_stc_dmac_descriptor_t</a> *&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structcy__stc__dmac__descriptor__config__t.html#a99cb4784bc632bd6f7144a972e7b9509">nextDescriptor</a></td></tr>
<tr class="memdesc:a99cb4784bc632bd6f7144a972e7b9509"><td class="mdescLeft">&#160;</td><td class="mdescRight">The next descriptor to chain after completion.  <a href="#a99cb4784bc632bd6f7144a972e7b9509">More...</a><br /></td></tr>
<tr class="separator:a99cb4784bc632bd6f7144a972e7b9509"><td class="memSeparator" colspan="2">&#160;</td></tr>
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<h2 class="groupheader">Field Documentation</h2>
<a id="ab968eec67221ce9448bc3d7a51012232"></a>
<h2 class="memtitle"><span class="permalink"><a href="#ab968eec67221ce9448bc3d7a51012232">&#9670;&nbsp;</a></span>retrigger</h2>

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          <td class="memname"><a class="el" href="group__group__dmac__enums.html#ga016be77931e116644c70e934101dd7c3">cy_en_dmac_retrigger_t</a> cy_stc_dmac_descriptor_config_t::retrigger</td>
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<p>Specifies whether the DMA controller should wait for the input trigger to be deactivated. </p>

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<a id="a264ab4339fd7533256baea6b49811f68"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a264ab4339fd7533256baea6b49811f68">&#9670;&nbsp;</a></span>interruptType</h2>

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          <td class="memname"><a class="el" href="group__group__dmac__enums.html#ga78bb44cea66b230aadd012c5bae864a3">cy_en_dmac_trigger_type_t</a> cy_stc_dmac_descriptor_config_t::interruptType</td>
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<p>Sets the event that triggers an interrupt. </p>
<p>See <a class="el" href="group__group__dmac__enums.html#ga78bb44cea66b230aadd012c5bae864a3">cy_en_dmac_trigger_type_t</a>. </p>

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<h2 class="memtitle"><span class="permalink"><a href="#ac0eef282a96d373f44a5fa6078af259e">&#9670;&nbsp;</a></span>triggerOutType</h2>

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          <td class="memname"><a class="el" href="group__group__dmac__enums.html#ga78bb44cea66b230aadd012c5bae864a3">cy_en_dmac_trigger_type_t</a> cy_stc_dmac_descriptor_config_t::triggerOutType</td>
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<p>Sets the event that triggers an output. </p>
<p>See <a class="el" href="group__group__dmac__enums.html#ga78bb44cea66b230aadd012c5bae864a3">cy_en_dmac_trigger_type_t</a>. </p>

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<h2 class="memtitle"><span class="permalink"><a href="#a7ffaa831fab50f91b1ff7c5e5c1e0ae9">&#9670;&nbsp;</a></span>channelState</h2>

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<p>Specifies whether the channel is enabled or disabled on completion of descriptor see <a class="el" href="group__group__dmac__enums.html#ga0e57c8ab013d71005b81e60c2c4ee7a9">cy_en_dmac_channel_state_t</a>. </p>

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<h2 class="memtitle"><span class="permalink"><a href="#aa20430ff90603af62ca4bd7c36de35e0">&#9670;&nbsp;</a></span>triggerInType</h2>

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<p>Sets what type of transfer is triggered. </p>
<p>See <a class="el" href="group__group__dmac__enums.html#ga78bb44cea66b230aadd012c5bae864a3">cy_en_dmac_trigger_type_t</a>. </p>

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<h2 class="memtitle"><span class="permalink"><a href="#a7f23f95c4fc072b1aafbde341dd9a683">&#9670;&nbsp;</a></span>dataSize</h2>

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<p>The size of the data bus for transfer. </p>
<p>See <a class="el" href="group__group__dmac__enums.html#gac2fda05300faa05ecfc118f22ed2a3c5">cy_en_dmac_data_size_t</a>. For memory copy and scatter descriptors this setting will be ignored. </p>

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<h2 class="memtitle"><span class="permalink"><a href="#af95d0b9ee761cee84ab931dd87f89911">&#9670;&nbsp;</a></span>srcTransferSize</h2>

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<p>The source transfer size. </p>
<p>For memory copy and scatter descriptors this setting will be ignored. </p>

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<h2 class="memtitle"><span class="permalink"><a href="#aba58d5dad537ee08cfbf5f3df32aad5a">&#9670;&nbsp;</a></span>dstTransferSize</h2>

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<p>The destination transfer size. </p>
<p>For memory copy and scatter descriptors this setting will be ignored. </p>

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<h2 class="memtitle"><span class="permalink"><a href="#a33ef66614f4911171513a63198e21c40">&#9670;&nbsp;</a></span>descriptorType</h2>

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<p>The type of the descriptor. </p>
<p>See <a class="el" href="group__group__dmac__enums.html#gafc067b535081b9cd83fa29b9e68b002c">cy_en_dmac_descriptor_type_t</a>. </p>

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<h2 class="memtitle"><span class="permalink"><a href="#a56e737e12986f1f9ae07bbb23a547ba7">&#9670;&nbsp;</a></span>srcAddress</h2>

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<p>The source address of the transfer. </p>

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<h2 class="memtitle"><span class="permalink"><a href="#ab9807708f96de4c232798b9862726f81">&#9670;&nbsp;</a></span>dstAddress</h2>

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<p>The destination address of the transfer. </p>

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<h2 class="memtitle"><span class="permalink"><a href="#aff401931a78359d9c4fbc668e2191732">&#9670;&nbsp;</a></span>srcXincrement</h2>

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<p>The address increment of the source after each X-loop transfer. </p>
<p>Valid range is -32768...32767. </p>

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<h2 class="memtitle"><span class="permalink"><a href="#a727d7f16fc29fa9d75c8125ea8377cdf">&#9670;&nbsp;</a></span>dstXincrement</h2>

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<p>The address increment of the destination after each X-loop transfer. </p>
<p>Valid range is -32768...32767. </p>

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<h2 class="memtitle"><span class="permalink"><a href="#a0d2682fd8330b970ffa7221ad8b02fa9">&#9670;&nbsp;</a></span>xCount</h2>

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<p>The number of transfers in an X-loop. </p>
<p>Valid range (for all descriptors except scatter transfer) is 1...65536. For memory copy descriptors, the X count is a number of bytes (not a data transfer size). For scatter descriptors, the X count is a number of [address, data] pairs (two words each). Valid range is 1...32768. </p>

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<h2 class="memtitle"><span class="permalink"><a href="#afc4c4480f2290dc42b3d9c00be65cf9b">&#9670;&nbsp;</a></span>srcYincrement</h2>

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<p>The address increment of the source after each Y-loop transfer. </p>
<p>Valid range is -32768...32767. </p>

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<h2 class="memtitle"><span class="permalink"><a href="#a0d7425723f735c43d9f9c3d5add46051">&#9670;&nbsp;</a></span>dstYincrement</h2>

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<p>The address increment of the destination after each Y-loop transfer. </p>
<p>Valid range is -32768...32767. </p>

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<h2 class="memtitle"><span class="permalink"><a href="#ae98ef1c0c9f829c694ad24a5b8b43b20">&#9670;&nbsp;</a></span>yCount</h2>

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<p>The number of X-loops in the Y-loop. </p>
<p>Valid range is 1...65536. </p>

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<h2 class="memtitle"><span class="permalink"><a href="#a99cb4784bc632bd6f7144a972e7b9509">&#9670;&nbsp;</a></span>nextDescriptor</h2>

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          <td class="memname"><a class="el" href="structcy__stc__dmac__descriptor__t.html">cy_stc_dmac_descriptor_t</a>* cy_stc_dmac_descriptor_config_t::nextDescriptor</td>
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<p>The next descriptor to chain after completion. </p>
<p>A NULL value will signify no chaining. </p>

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